S Block Elements Question 239
Question: When sodium bicarbonate is heated the product obtained is
[Pb. CET 2000; DCE 2004]
Options:
A) Na
B) $ Na_2CO_3 $
C) $ NaCO_3 $
D) $ Na_2(HCO_3) $
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Answer:
Correct Answer: B
Solution:
When sodium bicarbonate $ (NaHCO_3) $ is heated, sodium carbonate, $ CO_2 $ and water are formed. $ 2NaHCO_3\xrightarrow{\Delta }\underset{\text{Sodium carbonate}}{\mathop{Na_2CO_3}}+CO_2\uparrow +H_2O $